Fan



A. A. CANTON.

FAN.

APPLICATION FILED AUG.20, I919.

1,348,477. atented Aug. 3, 1920.

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/o I H wuewboz UNITED STATES ALLEN A. CARTON, OF NEW YORK, N. Y., ASSIGNOB TO CANTON FAN HEATER 00., A I

PATENT orrlca.

OOBPOBATION OF DELAWARE.

FAN.

Specification of Letters Patent.

PatentedAug, 3, 1920.

Application filed August 20, 1918. Serial No. 818,784.

To all whom it may concern:

Be it known that I, ALLEN A. CANTON, a citizen of the United States of America, residing at the city, county, and State of New York, have invented new and useful Improvements in Fans, of which the following is a specification.

This invention relates to fans.

The object of the-invention isto rovide an electric fan havin an electric eating clement cooperating t erewith with means for interrupting the current of air from the fan so that the current of air passes over or through the heatin element in impulses, instead of in a steady current.

A further object is to provide means for varying the period of interruption of the current of air and'independentl 0 rated means for varying the speed of t e an and Y the flow of current to the heating element.

Where a resistance is subjected to a constant current of air, it will not attain the maximum glow or incandescence which it would attain without the current of air being interrupted. By interruptin the current of air for a short period 0 time the glow or incandesoence of the resistance will be increased so that, when the current of air is resumed, more heat will be taken up in a given time and diflused by the current of air.

I am aware that patents'have been ranted, for instance Patent No. 676949, 0 June 25, 1901, covering the combination of a motor-driven fan and a resistance, but my improvement consists in interrupting the current of air for the purposes described.

The invention consists in the construction, combination and arrangement of parts, as herein illustrated, described and claimed.

In the accom anying drawings, formi part hereof, is i ustrated a form of embodiment of the invention, in which drawings similar reference characters designate corres onding parts, and in which:

igure 1 is a side elevation, partly in section; Fig.2 is an elevation of the heating element;

which is disposed a fan 3, all of these elements being of common and well-known construction.

Disposed around the fan 3 and supported by the casinglof the motor 2 is a casing 4, provided wit segmental slots 5 in its rear wall and having its opposite side open.

Disposed across the open end of the easmg 4 are suitable resistance wires 6, supported on rods 7 carried by a rectangular frame 8, adapted to be slip ed into the open end of the casing 4 and to e retained there in by friction. A suitable guard 9 is used to prevent accidental contact with the resistance Wires 6 when the are heated.

A shutter 10 comprising a thin disk is provided with segmental slots 11, correspending in size and arrangement with relation to its periphery to the se ental slots 5 in the casing 4. The centra opening of the shutter 10 has securedmdjacent thereto a cone-shaped split sleeve 12 arranged to be adjustably retained by friction on a cone 13 on the shaft of the motor so that the disk 10 may rotate at the speed of the fan-shaft 13 or at a variable-speed below the fan-shaft.

Wires 14 are secured to the resistance wires 6 and are so arran ed as to be controlled by a switch 15, so t .at a varying volume of current may pass therethrough to vary theheating of the resistance wires 6. The wires 14 at a point past the switch 15 are connected to the wires 16 which are used as feed wires to the motor 2. By this arrangement the electric current to the resistance wires 6 may be varied or cut ofi and the fan operated as usual. A suitable switch 17, of common construction is arranged to va and control the speed of the fan 3. By a justing the shutter 10 lon itudinally of the motor shaft the speed of the shutter may be varied, as at its point furthest removed from the fan the shutter is simply loosely mounted, and as the friction thereof on the shaft is increased by forcing it toward the righthand of Fig. 1 the speed of the shutter will be corres ndingly increased.

When t e slots 11 register with the slots 5 a current will be permitted to be forcedout of the open end of the casing 4 and over the resistance wires 6. When the slots 5 and 11 do not re star, the current will be Y materiall reducedt so the current from the fan 3 is y impulses, permitting the I'GS1St-- ance wires 6 to become more highly incan- Fi 3 is an elevation of the rear wall of the an casing; and,

Fig. 4 is an elevation of the shutter used in the construction.

Referring to the drawings, 1 designates a la base, supporting a motor 2, on the shaft of ing element disposed in the path of a cur-' rent of air from the fan, means for interrupting the current of air.

2. In combination with a fan and a heating element disposed in the path of a current of air from the fan, means for periodically interrupting the current of air.

3. In combination with a fan and a heating element disposed in the path of a current of air-from the fan, means effected by the o ration of the fan for interrupting perio ically. the current of air.

4. In combination with a fan, a heating element disposed in the path of movement of a current of air from the fan, a source of electrical current for operating the fan and the heating element, and means for in terrupting the current o f air from the fan. 5. n combination witha fan, a heating element disposed in the path of movement of a current of air from the fan, asource of electrical current for 'operati the fan and theheati element, indepen ently op- 80 erable means or controlling the flow of electric current to the fan and heating .ele-

ment, and means for interrupting thecurrent of air from the fan.

6. In combination with afan, a heating 85 element disposed inthe path of movement of a current of air'from the'fan, a source of electrical current for operatin the -fan and the heating element, means %or interthe current or air from the fan,

rupting of the 40 and means for varying the frequency interrupting means.

ried by the open end of the casin z name/to this specification.

7. In combination with a ian, a heating element disposed in the path of movement ofa current of air from the fan, a source of electrical current for operatin the fan and the heating element, indepen entl op- 'erable means for controlling the flow o electric current to the fan and heating element, means for interru ting the current ,of air from the fan, an means for varyingthe frequency of the operation of the means for ifnterrupting the current. of air from the an. r i

8. In combination with a fan and a heating element, a casing dis'osed around the fan and arranged to hol the heating ele-, ment, and provided with slots in its rear wall, and a shutter arranged o be operated by the operation of the fan and provided with slots corresponding to the slots in the casing. 9. n combination with a fan and a heat- ;ing element, a casmg dis used around the fan and arranged to 1161 the heating element, and provided with slots in its rear wall, a shutter arran edto be operated hi the operation bf the an and-provided wit slots corresponding to the slots inthe casing, and means for var ing the speed of rotation of the shutter wit relation to the fan.

10. ,In combination with a fan a casing disposed over the fan and provided with slots in its rear wall, a heating element cardisposed on the .fan shaft a tip it coneshaped sleeve adjustahly disposed on the provided with slots rresponding. to the slots in the fences In testimony whereof I have signed my ALLEN A. CANTON.

cone, and a shutter sec ed to the sleeve and 

